{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x9bd66ac1896766d8ecbfab598bd417ca3322ed9ee216103c0b5bc435990d17f7",
    "signature": "0xd452da47bbdb04e4c15a428c4bd119b20337197b796325a5bc42a774c747383916aac691c326c2820f19e2b82fc4c8cb76cdcb7d3cfd32152b7bf12b5d04b6e91c",
    "signer": "0x1011297FAB27Cd869ba8313983bF4793AB784705",
    "userId": "540848139"
  }
}